Thanks for waiting! And sorry for delaying the release date multiple times - we developers are terribly bad at planning time!
The first version in Early Access does not include a tutorial, but I'll add it very soon. You can read the description in Steam Store page to see how the game should be played!
And as this first release is my real FIRST release of something in my life, I did not put all contents I have in it so hopefully the game balance won't screw up too badly, though I'm quite confident of the existing content. My plan is to see how it goes as user play the game, and gradually add the existing contents. So expect bunches of weekly updates in the coming month!
Thanks to all the people who supported to me along the way. Really appreciate you guys' patience and understanding!
Hope you enjoy the game :)